基于虚拟钻孔的城市三维地质模型构建方法  

City 3D geological model based on virtual boreholes

作　　者：王甲怡 成远湲 马莎 张润华 刘聪聪 吕敦玉[2] Wang Jiayi;Cheng Yuanyuan;Ma Sha;Zhang Runhua;Liu Congcong;Lv Dunyu(School of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Science,Shijiazhuang 050000,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,郑州450046 [2]中国地质科学院水文地质环境地质研究所,石家庄050000

出　　处：《工程勘察》2021年第6期46-52,共7页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金项目(41602273);中国地质调查局地质调查项目“郑州城市地质调查(DD20189262)”(含“郑州城市地质调查地下空间开发影响监测(IHEGDD2020015)”“城市地下空间精细探测(IHEGDD2019031)”)资助。

摘　　要：城市地下空间开发利用是目前解决城市发展瓶颈的有效途径,其三维地质模型的构建是目前研究的热点和难点。本文基于稀疏实测钻孔的分布特征,采用空间自协方差插值法、尖灭点处理算法及Loop细分算法,生成插值加密虚拟钻孔、尖灭处理虚拟钻孔及细分光滑虚拟钻孔,然后基于实测钻孔和虚拟钻孔,运用Civil 3D平台的地质建模功能,快速构建出符合地统计学规律的、反映研究区现场地层信息的三维地质模型,实现地质信息的直观可视性、兼容性以及可编辑性,为建立城市地下空间开发利用中通过三维地质模型获取地质信息提供新方法。The development and utilization of urban underground space is an effective way to solve the bottleneck of urban development. This paper based on sparse boreholes measured,uses the spatial autocovariance interpolation algorithm,pinch-out point processing algorithm and Loop subdivision algorithm,to generate interpolation-encrypted virtual boreholes,pinch-out processing virtual boreholes and subdivisional virtual boreholes. Then based on the actual and virtual boreholes,using Civil 3 D ’s geological modeling capabilities,quickly build a 3 D geological model that can obeys the law of geostatistics and reflect the geological information. This method could realize the geological information visible, compatible and editable,and provides a new way to obtain geological information through 3 D geological model in the development and utilization of urban underground space.

关 键 词：虚拟钻孔 三维地质模型 Civil 3D 插值算法 城市地下空间 

分 类 号：P208[天文地球—地图制图学与地理信息工程]